Last official estimated population of Sioux County was 1,312 (year 2014)[1]. This was 0% of total US population and 0.1% of total Nebraska state population. Area of Sioux County is 2,067.3 mi² (=5354.4 km²), in this year population density was 0.63 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Sioux County population in 2026 would be 1,315 [0].
Historical population of Sioux County for period 1880-2014 [1] , [2] , [3]:
Estimated population for 2014[1]. Population density is in p./sq.mi [4]. Changes are for period 2010-2015. Value is %/year. Boundary lines are approx. 2012 [5]. Click on flag to hide it.
Population • Density • Changes • Legends • Position
[1880-1890] +13.37 %/yr
[1890-1900] -1.75 %/yr
[1900-1910] +10.54 %/yr
[1910-1920] -2.1 %/yr
[1920-1930] +0.3 %/yr
[1930-1940] -1.53 %/yr
[1940-1950] -2.44 %/yr
[1950-1960] -1.91 %/yr
[1960-1970] -2.33 %/yr
[1970-1980] -0.97 %/yr
[1980-1990] -1.73 %/yr
[1990-2000] -0.49 %/yr
[2000-2005] -0.52 %/yr
[2005-2010] -1.82 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Sioux County? Visit this page: Settlements in Sioux County, NE
Population of Sioux County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 36 | 35 | 71 |
| 5 to 9 | 40 | 34 | 74 |
| 10 to 14 | 38 | 49 | 87 |
| 15 to 19 | 38 | 37 | 75 |
| 20 to 24 | 27 | 29 | 56 |
| 25 to 29 | 20 | 24 | 44 |
| 30 to 34 | 34 | 35 | 69 |
| 35 to 39 | 43 | 33 | 76 |
| 40 to 44 | 30 | 34 | 64 |
| 45 to 49 | 28 | 41 | 69 |
| 50 to 54 | 61 | 46 | 107 |
| 55 to 59 | 63 | 56 | 119 |
| 60 to 64 | 69 | 48 | 117 |
| 65 to 69 | 36 | 37 | 73 |
| 70 to 74 | 25 | 31 | 56 |
| 75 to 79 | 27 | 28 | 55 |
| 80 to 84 | 29 | 25 | 54 |
| 85+ | 15 | 22 | 37 |
Sioux County resident population estimates by Sex, Race, and Hispanic Origin[1b]. For full list of abbrevations see: population.us/about page.
| Race | Male | Female | Total |
| WAC | 647 | 633 | 1,280 |
| WA | 636 | 623 | 1,259 |
| NH | 632 | 608 | 1,240 |
| NHWAC | 623 | 600 | 1,223 |
| NHWA | 614 | 591 | 1,205 |
| H | 27 | 36 | 63 |
| HWAC | 24 | 33 | 57 |
| HWA | 22 | 32 | 54 |
| IAC | 13 | 16 | 29 |
| TOM | 13 | 10 | 23 |
| NHIAC | 9 | 13 | 22 |
| NHTOM | 11 | 9 | 20 |
| IA | 8 | 9 | 17 |
| BAC | 7 | 4 | 11 |
| NHIA | 5 | 6 | 11 |
| NHBAC | 6 | 3 | 9 |
| HIAC | 4 | 3 | 7 |
| HIA | 3 | 3 | 6 |
| NHAAC | 4 | 1 | 5 |
| AAC | 4 | 1 | 5 |
| HTOM | 2 | 1 | 3 |
| NHAA | 1 | 1 | 2 |
| NHBA | 1 | 1 | 2 |
| HBAC | 1 | 1 | 2 |
| BA | 1 | 1 | 2 |
| AA | 1 | 1 | 2 |
| NAC | 1 | 0 | 1 |
| NHNAC | 1 | 0 | 1 |
| HNAC | 0 | 0 | 0 |
| HAAC | 0 | 0 | 0 |
| NA | 0 | 0 | 0 |
| HBA | 0 | 0 | 0 |
| NHNA | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
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[0] Calculated by population.us from last known population growth rate, not official data.
[1] County population - 2014, archived from the original, retrieved 02/23/2016
[1b] Annual County Resident Population Estimates by Age, Sex, Race, and Hispanic Origin, (used only data for 2014) archived from the original, retrieved 02/23/2016
[2] County population - 2000-2010, archived from the original, retrieved 02/23/2016
[3] Population of States and Counties of the United States: 1790 to 1992, PDF, 15 Mb, census.gov, retrieved 02/23/2016
[4] County area, latitude longitude data, retrieved 02/23/2016
[5] County boundaries, CSV files on boundaries.us, retrived 03/18/2016
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